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In Stock
Ships by Thursday, August 6
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· Product image is representative; revision or series may vary. Contact us to request a specific version.
We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 1756-IA16I
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Product Model1756-IA16I
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Spare Model1756IA16I 1756-IA16I/A
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Product ParametersControlLogix 120V AC isolated input module
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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In stock9 units
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Estimated Shipping Size3.5x14.3x14.5cm
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ManufacturerAllen-Bradley
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Weight0.25 kg
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Input Delay TimeProgrammable 9 or 18 milliseconds
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Minimum Operating Current5 milliamperes at 79 Volts AC, 47-63 Hertz
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Maximum Operating Current15 milliamperes at 132 Volts AC, 47-63 Hertz
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Maximum Input Current, Off-State2.5 milliamperes
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Power Dissipation (Max)4.9 Watts at 60 degrees Celsius
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Backplane Current at 5 Volts125 milliamperes
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Backplane Current at 24 Volts2 milliamperes
Description
The Allen-Bradley 1756-IA16I is a ControlLogix digital input module designed for monitoring 120 VAC field signals in industrial automation systems. The module provides sixteen individually isolated input channels, allowing each input to operate independently without sharing a common reference. This configuration is particularly useful in applications where field devices originate from different power sources or where electrical isolation between channels is required.
The module supports an operating voltage range of 79 to 132 VAC at 47 to 63 Hz and is intended for use with pushbuttons, selector switches, limit switches, auxiliary contacts, relays, and other discrete AC field devices. Each input channel includes isolation circuitry that helps reduce the effects of ground loops and electrical interference while improving system reliability.
The 1756-IA16I installs directly into a ControlLogix chassis and communicates through the high-speed ControlLogix backplane. Input status information can be exchanged with controllers using configurable Requested Packet Intervals (RPI), Change-of-State reporting, and timestamp functions for event-driven applications. The module supports input timestamp accuracy of approximately ±200 microseconds, making it suitable for process monitoring and machine control systems requiring precise event detection.
The module supports an operating voltage range of 79 to 132 VAC at 47 to 63 Hz and is intended for use with pushbuttons, selector switches, limit switches, auxiliary contacts, relays, and other discrete AC field devices. Each input channel includes isolation circuitry that helps reduce the effects of ground loops and electrical interference while improving system reliability.
The 1756-IA16I installs directly into a ControlLogix chassis and communicates through the high-speed ControlLogix backplane. Input status information can be exchanged with controllers using configurable Requested Packet Intervals (RPI), Change-of-State reporting, and timestamp functions for event-driven applications. The module supports input timestamp accuracy of approximately ±200 microseconds, making it suitable for process monitoring and machine control systems requiring precise event detection.
Revisions
Revision Part #
Also known as
Information
Overview
Manuals
Application Notes
Product Applications
Pre-Installation Requirements
Features:
- 16 Individually Isolated Input Channels
- 120V AC Voltage Category with Wide Operating Range
- Compatible with 36-Pin Removable Terminal Blocks
- Producer/Consumer Model for Data Sharing
The 1756-IA16I operates at a nominal input voltage of 120V AC with a wide operating voltage range of 74 to 132V AC and frequency range of 47 to 63 Hz, making it suitable for standard industrial power environments. The 1756-IA16I is installed directly into any 1756 ControlLogix local or remote chassis, providing flexibility for both centralized and distributed control system architectures. The 1756-IA16I utilizes the ControlLogix producer/consumer communication model, enabling input status data to be multicasted and consumed simultaneously by multiple controllers across the control network.
The 1756-IA16I Allen Bradley ControlLogix 120V AC isolated input module may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen Bradley 1756-IA16I ControlLogix 120V AC isolated input module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The input voltage and voltage category of this module are both 120 Volts AC. The current draw at 24 Volts is 3 milliamps and for 5.1 Volts, it is 125 milliamps. The module’s operating voltage ranges from 79 to 132 Volts AC and 47 to 63 Hertz. Maximum power dissipation is 4.9 Watts at 60 Degrees Celsius and the thermal dissipation is 16.71 BTU per hour. Inrush current, at a maximum, is 250 milliamps and the total backplane power is 0.71 Watts. The screw to backplane input delay times are as follows: hardware delay is 10 milliseconds maximum plus user-selectable filter time (1 or 2 milliseconds), and hardware delay has a maximum time of 8 milliseconds and a user-selectable filter time ranging from 9 to 18 milliseconds. The maximum off-stage voltage is 20 Volts and 2.5 milliamps for the maximum current. For the on-state, the minimum is 5 milliamps at 79 Volts AC, ranging from 47 to 63 Hertz, while the maximum is 15 milliamps at 132 Volts AC, ranging as well from 47 to 63 Hertz.
- Heavy Manufacturing/Auto: Monitors safety switches, gate interlocks, and proximity sensors where noise immunity is critical
- Oil/Gas/Chemical: Interfaces with 120V AC E-stops, valve limit switches, and motor control centers
- Power Distribution: Reads status feedbacks from high-voltage circuit breakers and switchgear indicators
- Water/Wastewater: Controls pumps and filtration with isolated sensor returns to prevent faults from ground shorts
- Chemical/Pharmaceutical: Provides high-speed communication for recipe management, batch processing, and safety shutdowns
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Enclosure: Mount the system inside a protective enclosure. Use a tool-secured box with a 5VA flame-retardant rating.
Chassis Compatibility: Use only an approved ControlLogix 1756 Chassis.
ESD Prevention: Always wear an approved grounding wrist strap before touching circuit boards, connector pins, or component elements.
Power Warning: Do not insert or remove modules while the backplane power is active. An electric arc can occur and damage components or trigger an explosion in hazardous areas.
Alternative Names
1756-1A161
17561A161
1756IAI6I
I7561AI61
1756-1A16I
17561A16I
I756-1AI61
I756IA16I
1756-IA161
1756IA161
I756-IA16I
I756IAI6I
1756-IAI6I
1756IA16I
I756-IAI6I
Technical notes
The module is rated for 0 to 60°C operating temperature and is certified for use in industrial environments with Class G3 corrosion protection. It carries UL, c-UL-us, CE, C-Tick, EAC, and KC certifications, along with marine certifications from ABS, BV, DNV, GL, and LR. The 1756-IA16I is suitable for applications requiring isolated AC inputs for noise immunity and safety in industrial control systems.
FAQs
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What is the 1756-IA16I ?
+The Allen-Bradley 1756-IA16I is a 16-channel, individually isolated AC digital input module belonging to the ControlLogix platform. -
Can this module be hot-swapped?
+Yes. The ControlLogix chassis platform supports Removal and Insertion Under Power (RIUP). -
Which Removable Terminal Block (RTB) should I use?
+The module requires a 36-pin RTB. You can use either the cage-clamp style (1756-TBNH) or the spring-clamp style (1756-TBSH). Note: RTBs are sold separately from the module. -
Can this module be placed in a remote I/O rack?
+Yes, it can be mounted in a local controller chassis or placed in a remote I/O chassis communicating via EtherNet/IP or ControlNet networks. It allows multiple owner-controllers to simultaneously listen to and map its input states.
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